From Argento Vivo, this charm necklace features:n18-kt gold; sterling silver; quartznLobster clasp closurenMulti-charm drop necklinenu0026#34;Ohmu0026#34; charm detail. Approx. 16u0026#34; chain with 2u0026#34; extender; 1u0026#34; stone charmnFrom Argento Vivo, this charm necklace features: 18-kt gold; sterling silver; quartz Lobster clasp closure Multi-charm drop neckline "Ohm" charm detail Approx. 16" chain with 2" extender; 1" stone charm